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D3のjavascriptライブラリを使用して強制的なグラフ（他の機能とともに）を表示するWebページがあります。私はノードの検索バーを追加しようとしています（jQueryを使用しています）、そのノードの属性（name、clusterIDなど、jsonファイルのノード部分にあるもの）を検索したときにそのノードを強調表示します。jQueryを使用したD3.jsグラフのノード検索バー
グラフの上に検索バーが正しく表示されていますが、検索ボタンで正しくノードが強調表示されません。検索バーに文字を入力するたびにChromeコンソールメッセージが表示されます：VM84:1 Uncaught SyntaxError: Unexpected token < in JSON at position 0完全なメッセージは、質問の一番下にあります。また、ノードのいずれかの既知の名前属性を検索するために検索ボタンをクリックすると、コンソールで何も起こりません。
私は特に、一緒に$() jQueryの機能とgraph.jsファイルにsearchNode機能でオートコンプリート機能を動作するようにjQueryとD3コードを取得するように見えることはできません。
誰も私を助けることができますか？以下は、jsFiddleリンク、Webページを構築するためのhtmlファイルとjavascriptファイル、およびChromeコンソールメッセージのスクリーンショットです。助けてくれてありがとう！
jsFiddle：http://jsfiddle.net/spw1016/mc5Lprcr/
クロームコンソールフルエラー：
Uncaught SyntaxError: Unexpected token < in JSON at position 0 VM89:1
parseJSON @ jquery-1.9.1.min.js:3
transformResult @ jquery.autocomplete.min.js:10
processResponse @ jquery.autocomplete.min.js:21
(anonymous function) @ jquery.autocomplete.min.js:19
c @ jquery-1.9.1.min.js:3
fireWith @ jquery-1.9.1.min.js:3
k @ jquery-1.9.1.min.js:5
r @ jquery-1.9.1.min.js:5
のindex.html：
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
overflow:hidden;
overflow:hidden;
margin:0;
}
text {
font-family: sans-serif;
pointer-events: none;
}
</style>
<head lang="en">
<title>Graph Visualization</title>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script type="text/javascript" src="js/jquery-1.9.1.min.js"></script>
<script type="text/javascript" src="js/jquery.autocomplete.min.js"></script>
<script type="text/javascript" src="js/currency-autocomplete.js"></script>
</head>
<body>
<div class="ui-widget">
<input id="search">
<button type="button" .onclick="searchNode()">Search</button>
</div>
</body>
<script src="graph.js"></script>
</html>
検索バーに入力した後 
完全なエラーメッセージgraph.js ：
var w = window.innerWidth;
var h = window.innerHeight;
var keyc = true, keys = true, keyt = true, keyr = true, keyx = true, keyd = true, keyl = true, keym = true, keyh = true, key1 = true, key2 = true, key3 = true, key0 = true
var focus_node = null, highlight_node = null;
var text_center = false;
var outline = false;
var min_score = 1;
var max_score = 10;
/*
var color = d3.scale.linear()
.domain(1, 10)
.range(["lime", "yellow", "red"]);
*/
var color = d3.scale.linear()
.domain([min_score, (min_score+max_score)/2, max_score])
.range(["lime", "yellow", "red"]);
var highlight_color = "blue";
var highlight_trans = 0.1;
var size = d3.scale.pow().exponent(1)
.domain([1,100])
.range([8,24]);
var force = d3.layout.force()
.linkDistance(60)
.charge(-300)
.size([w,h]);
var default_node_color = "#ccc";
//var default_node_color = "rgb(3,190,100)";
var default_link_color = "#888";
var nominal_base_node_size = 8;
var nominal_text_size = 10;
var max_text_size = 24;
var nominal_stroke = 1.5;
var max_stroke = 4.5;
var max_base_node_size = 36;
var min_zoom = 0.1;
var max_zoom = 7;
var svg = d3.select("body").append("svg");
var zoom = d3.behavior.zoom().scaleExtent([min_zoom,max_zoom])
var g = svg.append("g");
svg.style("cursor","move");
/*
var request = new XMLHttpRequest();
request.open("GET", "graph.json", false);
request.send(null)
var graph = JSON.parse(request.responseText);
*/
d3.json("graph.json", function(error, graph) {
var linkedByIndex = {};
graph.links.forEach(function(d) {
linkedByIndex[d.source + "," + d.target] = true;
});
function isConnected(a, b) {
return linkedByIndex[a.index + "," + b.index] || linkedByIndex[b.index + "," + a.index] || a.index == b.index;
}
function hasConnections(a) {
for (var property in linkedByIndex) {
s = property.split(",");
if ((s[0] == a.index || s[1] == a.index) && linkedByIndex[property]) return true;
}
return false;
}
force
.nodes(graph.nodes)
.links(graph.links)
.start();
var link = g.selectAll(".link")
.data(graph.links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width",nominal_stroke)
.style("stroke", default_link_color)
var node = g.selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", "node")
.call(force.drag)
node.on("dblclick.zoom", function(d) { d3.event.stopPropagation();
var dcx = (window.innerWidth/2-d.x*zoom.scale());
var dcy = (window.innerHeight/2-d.y*zoom.scale());
zoom.translate([dcx,dcy]);
g.attr("transform", "translate("+ dcx + "," + dcy + ")scale(" + zoom.scale() + ")");
});
var tocolor = "fill";
var towhite = "stroke";
if (outline) {
tocolor = "stroke"
towhite = "fill"
}
var circle = node.append("path")
.attr("d", d3.svg.symbol()
.size(function(d) { return Math.PI*Math.pow(size(d.size)||nominal_base_node_size,2); })
.type(function(d) { return d.type; }))
.style("fill", function(d) {return color(d.clusterID);})
.style("stroke-width", nominal_stroke)
.style(towhite, "white");
var text = g.selectAll(".text")
.data(graph.nodes)
.enter().append("text")
.attr("dy", ".35em")
.style("font-size", nominal_text_size + "px")
if (text_center)
text.text(function(d) { return d.name; })
.style("text-anchor", "middle");
else
text.attr("dx", function(d) {return (size(d.size)||nominal_base_node_size);})
.text(function(d) { return '\u2002'+d.name; });
node.on("mouseover", function(d) {
set_highlight(d);
})
.on("mousedown", function(d) { d3.event.stopPropagation();
focus_node = d;
set_focus(d)
if (highlight_node === null) set_highlight(d)}).on("mouseout", function(d) {
exit_highlight();});
d3.select(window).on("mouseup",
function() {
if (focus_node!==null)
{
focus_node = null;
if (highlight_trans<1)
{
circle.style("opacity", 1);
text.style("opacity", 1);
link.style("opacity", 1);
}
}
if (highlight_node === null) exit_highlight();
});
function exit_highlight()
{
highlight_node = null;
if (focus_node===null)
{
svg.style("cursor","move");
if (highlight_color!="white")
{
circle.style(towhite, "white");
text.style("font-weight", "normal");
link.style("stroke", function(o) {return (isNumber(o.score) && o.score>=0)?color(o.score):default_link_color});
}
}
}
function set_focus(d)
{
if (highlight_trans<1) {
circle.style("opacity", function(o) {
return isConnected(d, o) ? 1 : highlight_trans;
});
text.style("opacity", function(o) {
return isConnected(d, o) ? 1 : highlight_trans;
});
link.style("opacity", function(o) {
return o.source.index == d.index || o.target.index == d.index ? 1 : highlight_trans;
});
}
}
function set_highlight(d)
{
svg.style("cursor","pointer");
if (focus_node!==null) d = focus_node;
highlight_node = d;
if (highlight_color!="white")
{
circle.style(towhite, function(o) {
return isConnected(d, o) ? highlight_color : "white";});
text.style("font-weight", function(o) {
return isConnected(d, o) ? "bold" : "normal";});
link.style("stroke", function(o) {
return o.source.index == d.index || o.target.index == d.index ? highlight_color : ((isNumber(o.score) && o.score>=0)?color(o.score):default_link_color);
});
}
}
zoom.on("zoom", function() {
var stroke = nominal_stroke;
if (nominal_stroke*zoom.scale()>max_stroke) stroke = max_stroke/zoom.scale();
link.style("stroke-width",stroke);
circle.style("stroke-width",stroke);
var base_radius = nominal_base_node_size;
if (nominal_base_node_size*zoom.scale()>max_base_node_size) base_radius = max_base_node_size/zoom.scale();
circle.attr("d", d3.svg.symbol()
.size(function(d) { return Math.PI*Math.pow(size(d.size)*base_radius/nominal_base_node_size||base_radius,2); })
.type(function(d) { return d.type; }))
//circle.attr("r", function(d) { return (size(d.size)*base_radius/nominal_base_node_size||base_radius); })
if (!text_center) text.attr("dx", function(d) { return (size(d.size)*base_radius/nominal_base_node_size||base_radius); });
var text_size = nominal_text_size;
if (nominal_text_size*zoom.scale()>max_text_size) text_size = max_text_size/zoom.scale();
text.style("font-size",text_size + "px");
g.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
});
svg.call(zoom);
resize();
//window.focus();
d3.select(window).on("resize", resize).on("keydown", keydown);
force.on("tick", function() {
node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
text.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
node.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });
});
var optArray = [];
for (var i = 0; i < graph.nodes.length - 1; i++) {
optArray.push(graph.nodes[i].name);
}
optArray = optArray.sort();
$(function() {
$("#search").autocomplete({
source: optArray
});
});
function searchNode() {
//find the node
var selectedVal = document.getElementById('search').value;
//node = svg.selectAll(".node");
if (selectedVal == "none") {
node.style("stroke", "white").style("stroke-width", "1");
} else {
var selected = node.filter(function (d, i) {
return d.name != selectedVal;
});
selected.style("opacity", "0");
//var link = svg.selectAll(".link")
link.style("opacity", "0");
d3.selectAll(".node, .link").transition()
.duration(5000)
.style("opacity", 1);
}
}
function resize() {
var width = window.innerWidth, height = window.innerHeight;
svg.attr("width", width).attr("height", height);
force.size([force.size()[0]+(width-w)/zoom.scale(),force.size()[1]+(height-h)/zoom.scale()]).resume();
w = width;
h = height;
}
function keydown() {
if (d3.event.keyCode==32) { force.stop();}
else if (d3.event.keyCode>=48 && d3.event.keyCode<=90 && !d3.event.ctrlKey && !d3.event.altKey && !d3.event.metaKey)
{
switch (String.fromCharCode(d3.event.keyCode)) {
case "C": keyc = !keyc; break;
case "S": keys = !keys; break;
case "T": keyt = !keyt; break;
case "R": keyr = !keyr; break;
case "X": keyx = !keyx; break;
case "D": keyd = !keyd; break;
case "L": keyl = !keyl; break;
case "M": keym = !keym; break;
case "H": keyh = !keyh; break;
case "1": key1 = !key1; break;
case "2": key2 = !key2; break;
case "3": key3 = !key3; break;
case "0": key0 = !key0; break;
}
link.style("display", function(d) {
var flag = vis_by_type(d.source.type)&&vis_by_type(d.target.type)&&vis_by_node_score(d.source.score)&&vis_by_node_score(d.target.score)&&vis_by_link_score(d.score);
linkedByIndex[d.source.index + "," + d.target.index] = flag;
return flag?"inline":"none";});
node.style("display", function(d) {
return (key0||hasConnections(d))&&vis_by_type(d.type)&&vis_by_node_score(d.score)?"inline":"none";});
text.style("display", function(d) {
return (key0||hasConnections(d))&&vis_by_type(d.type)&&vis_by_node_score(d.score)?"inline":"none";});
if (highlight_node !== null)
{
if ((key0||hasConnections(highlight_node))&&vis_by_type(highlight_node.type)&&vis_by_node_score(highlight_node.score)) {
if (focus_node!==null) set_focus(focus_node);
set_highlight(highlight_node);}
else {exit_highlight();}
}
}
}
});
function vis_by_type(type)
{
switch (type) {
case "circle": return keyc;
case "square": return keys;
case "triangle-up": return keyt;
case "diamond": return keyr;
case "cross": return keyx;
case "triangle-down": return keyd;
default: return true;
}
}
function vis_by_node_score(score)
{
if (isNumber(score))
{
if (score>=0.666) return keyh;
else if (score>=0.333) return keym;
else if (score>=0) return keyl;
}
return true;
}
function vis_by_link_score(score)
{
if (isNumber(score))
{
if (score>=0.666) return key3;
else if (score>=0.333) return key2;
else if (score>=0) return key1;
}
return true;
}
function isNumber(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
ここにjsFiddle：http://jsfiddle.net/spw1016/30muk3ym/があります。私はChromeのコンソールエラーを再現できませんが、うまくいけば助けになります。 – 12MonthsASlav